In the following question, a sentence has been given in Direct/Indirect speech. Out of the four alternatives suggested, select the one, which best express the same sentence in Indirect/Direct speech.
Bunty said, "I have done my class work".

A

Bunty said, he had done his class work.

B

Bunty said that he had done his class work.

C

Bunty was saying, he has done his class work.

D

Bunty said that he did his class work.